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DOI: 10.4230/OASIcs.SLATE.2026.19

Lazarus: Where Compilers Meet Education

Authors: Rui Gonçalves, Pedro Rangel Henriques, and José Carlos Ramalho

Published in: OASIcs, Volume 144, 15th Symposium on Languages, Applications and Technologies (SLATE 2026)

Abstract

Lazarus is an intentionally compact platform featuring an optimizing compiler, a lightweight virtual machine and IDE integration. Its small size, lets students explore every compilation stage by experimenting with a compiler inspired by modern systems. At the core lies an incremental parser, that only re-parses the surrounding areas of the changed text in an IDE environment, and an SSA-based optimizer. The target machine is a register-based virtual machine, that mimics native architectures, and provides a debugger. This paper presents both the source language, and its register-based virtual machine, while discussing an often neglected feature in compiler design: the incremental parser.

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Rui Gonçalves, Pedro Rangel Henriques, and José Carlos Ramalho. Lazarus: Where Compilers Meet Education. In 15th Symposium on Languages, Applications and Technologies (SLATE 2026). Open Access Series in Informatics (OASIcs), Volume 144, pp. 19:1-19:18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2026)

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@InProceedings{goncalves_et_al:OASIcs.SLATE.2026.19,
  author =	{Gon\c{c}alves, Rui and Henriques, Pedro Rangel and Ramalho, Jos\'{e} Carlos},
  title =	{{Lazarus: Where Compilers Meet Education}},
  booktitle =	{15th Symposium on Languages, Applications and Technologies (SLATE 2026)},
  pages =	{19:1--19:18},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-440-6},
  ISSN =	{2190-6807},
  year =	{2026},
  volume =	{144},
  editor =	{Batista, Fernando and Ribeiro, Eug\'{e}nio and Ribeiro, Ricardo and Santos, Andr\'{e} L.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2026.19},
  URN =		{urn:nbn:de:0030-drops-267173},
  doi =		{10.4230/OASIcs.SLATE.2026.19},
  annote =	{Keywords: Object-Oriented Programming, Compilation, SSA, Optimization, Virtual Machine, IDE}
}

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Lazarus: Where Compilers Meet Education

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